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一个La₂O₃/MXene复合电极用于超级电容器,其电容和循环性能得到了改进

Jahangir Khan^1,2, Rana Tariq Mehmood Ahmad², Qiangmin Yu¹

¹Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, P. R. China.

Science and technology of advanced materials

|August 24, 2023

概括

一种由2D MXene纳米片和氧化物 (La2O3) 纳米粒子组成的新复合物提高了超级电容器的性能. 与单个组件相比,这种La2O3/MXene材料提供了更高的特异电容和更好的循环稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

二维 (2D) MXene 材料表现出优异的导电性和电化学性能,用于储能.
重叠MXene层可以限制它们在设备中的特定容量和循环性能.
开发先进的电极材料对于高功率的电化学能量储存至关重要.

研究的目的:

设计一个由2D MXene纳米片和氧化物 (La2O3) 纳米颗粒组成的复合材料.
为了克服MXene重新堆积和增强电化学性能的局限性.
评估La2O3/MXene复合物的超级电容应用的潜力.

主要方法:

使用2D MXene纳米片和La2O3纳米粒子制造复合材料.
复合电极对特定电容和循环性能进行电化学表征.
对复合材料与单个La2O3和MXene材料进行比较分析.

主要成果:

该La2O3/MXene复合电极在1A/g时达到366F/g的特定电容.
这种电容比La2O3高4.5倍,比单独的MXene高3倍.
复合电极在1000个循环后显示出96%的优异电容保持率.

结论:

双功能La2O3纳米粒子有效防止MXene重叠,并提高电化学性能.
在La2O3和MXene之间的协同作用有助于优越的电容和稳定性.
2O3/MXene复合材料显示出作为高性能超级电容器的先进电极材料的巨大潜力.

关键词:

两维材料是二维材料.这就是MXenesenes.电容容量电容容量容量容量容量骑自行车的运动电极材料的材料是电极的材料.兰他氧化物兰他氧化物超级电容器的超级电容器是什么

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